\begin{tikzpicture}[scale=.9]
    \pgfmathsetmacro{\R}{1.5}

    \tkzDefPoints{0/0/O_1, \R/0/O_2}
    \tkzInterCC[R](O_1,\R)(O_2,\R)  \tkzGetPoints{A}{B}

    \tkzDrawCircle[thick](O_1,A)
    \tkzDrawCircle[thick](O_2,A)
    \tkzDrawPoints(O_1, O_2)
    \tkzDrawSegments(O_1,O_2  A,B  O_1,A  O_2,A)
    \tkzLabelPoints[left](O_1)
    \tkzLabelPoints[right](O_2)
    \tkzLabelPoints[above=.2em](A)
    \tkzLabelPoints[below=.2em](B)
\end{tikzpicture}

